CUSHMAN: VINEYARD SOUND OSTRACODA. 
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near its southern limit in Vineyard Sound as are many other of the 
Crustacea. 
Cythereis canadensis (Brady). 
Cythere canadensis Brady, ’70, p. 452, pi. 19, fig. 4-6; Brady and Norman, 
’89, p. 166, pi. 15, fig. 14-15. 
Shells of this species were dredged from “Fish Hawk” station 7723. 
No living specimens were found. From the known range of this 
species it is in all probability a northern one, being described by Brady 
(’70) from the Gulf of St. Lawrence and later found in Davis Strait, 
lat. 66° 55' N., long. 55° 30' W., 57 fathoms. 
Cythereis dunelmensis Norman. 
Cythereis dunelmensis Norman, ’65, p. 22, pi. 7, fig. 1-4. 
Cythere dunelmensis Brady, ’68, p. 416, pi. 30, fig. 1-12; ’70, p. 450; Brady 
and Crosskey, ’71, pp. 61, 63; Brady, Crosskey, and Robertson, ’74, p. 
168, pi. 5, fig. 13-20; pi. 11, fig. 36-37; Brady and Norman, ’89, p. 168. 
Cythereis horrida Sars, ’66, p. 45. 
Shells referred to this species were obtained in the deeper parts of 
Vineyard Sound, “Fish Hawk” stations 7725, 7727. 
This again is a northern species, and is found in British waters 
and as far north as Spitzbergen, Iceland, and Baffin’s Bay. Brady 
and Crosskey (’71) record this species from the post-Tertiary clays of 
Saco and Portland, Maine. 
Cythereis concinna (Jones). 
Cythere concinna Jones, ’56, p. 29, pi. 4, fig. 7 a-f; Brady, ’68, p. 408, pi. 26, 
fig. 28-33; pi. 38, fig. 7; ’70, p. 450; Brady and Crosskey, ’71, pp. 61, 
62; Brady, Crosskey, and Robertson, ’74, p. 160, pi. 4, fig. 1-20; 
Brady and Norman, ’89, p. 162. 
Cythereis clavata Sars, ’66, p. 39. 
A single shell apparently belonging to this species was dredged in 
Vineyard Sound, “Fish Hawk” station 7723. Like the preceding 
species it is a northern one. Brady (’70) records it from the Gulf of 
